A kind of cable joint and its connecting method
A technology of cable joints and cables, which is applied in the direction of gas-filled/oil-filled cable accessories, equipment for connecting/terminating cables, etc. It can solve the problems of poor sealing, easy disconnection, and easy bumping, etc., to reduce faults and safety hazards, Avoid the effect of disconnection
Active Publication Date: 2020-12-01
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0004] The invention provides a cable joint and its connection method, aiming to solve the problems of easy bumping, easy disconnection, poor sealing and complicated binding process in the connection of cables used in oil field water wells.
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[0037] The embodiment of the present invention provides a cable joint and its connection method, aiming to solve the problems of easy bumping, easy disconnection, poor sealing and complicated binding process existing in the connection of cables used in oil field water wells.
[0038]By placing the hinged cable 3 in the sealing part 2, the sealing part 2 is fixedly connected to the U-shaped notch 4 on the side of the eccentric tube 1, so that the entire sealing part 2 is accommodated in the U-shaped notch 4. During the process, the eccentric tube 1 can effectively prevent the sealing part 2 from colliding with the bushing, thereby avoiding disconnection of the cable.
[0039] By injecting the sealing silicone grease 13 into the sealing nipple 5, the air in the sealing nipple 5 is displaced by the sealing silicone grease 13, so that the cable 3 can be completely isolated from the air, thereby reducing failures and potential safety hazards.
[0040] In addition, by setting the co...
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The invention is a cable joint and its connection method, which includes an eccentric tube, with oil pipes fixedly connected to both ends of the eccentric tube. A U-shaped notch is provided on the side of the eccentric tube; a sealing part is fixedly connected to the U-shaped notch. Cables are inserted into both sides of the sealing part, and the cable cores of the cables are hinged inside the sealing part; wherein the sealing part includes a sealing nipple with a cavity inside, and the two ends of the cavity are processed respectively. Has an internal thread; a joint with an opening inside There is a through hole, and the joint is connected to both ends of the sealing nipple through threads; a ferrule is conical, and the smaller diameter end of the ferrule is inserted into the through hole, and the larger diameter end of the ferrule is inserted into the through hole. One end is exposed outside the joint away from the end face of the sealing nipple; the pressure head is threadedly connected to the joint; the purpose of the present invention is to solve the problems of easy bumping and easy disconnection when the cables currently used in oilfield water wells are connected. , poor sealing and complicated bundling process.
Description
technical field [0001] The invention belongs to the technical field of oilfield water well cable connection, and in particular relates to a cable joint and a connection method thereof. Background technique [0002] The cables used in oilfield water wells are mainly used for downhole signal transmission, downhole equipment power supply and internal cable core protection. , due to the limitation of cable size and length, knocking and breaking, and bending and breaking, the cables need to be re-connected. [0003] The current cable connection method is to hinge the two cable cores, use adhesive tape to insulate and seal, and then bind the hinged cable on the oil pipe body through the oil pipe clamp to go downhole with the oil pipe. The main problems of this connection method are: 1. When the cable goes into the well, the clips of the tubing are likely to collide with the casing, causing the clips to break off and the hinged cable to be disconnected; 2. The outside of the cable...
Claims
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IPC IPC(8): H02G15/24H02G1/14
CPCH02G1/14H02G15/24
Inventor 王增林孙德旭马珍福王鹏罗杨张凯王鹏飞崔玉海谭云贤李琳
Owner CHINA PETROLEUM & CHEM CORP